Introduction Jan. 9th 7:15th. Pencil paper and a 2 meter rig. From no knowledge of Morse Code to 5 WPM. Optional Test with certificate and bragging rights. 45 minutes through April. Optional make up classes on Saturdays as required.
Dallas announcements .
New ham tips to study for your license and local classes (Dallas/Arlington, TX).
News: K5SLD.ORG - Arlington Amateur Radio Club New Ham Classes, Rescue Radio in North Sea, Army MARS phasing out Winlink, Rare DXpeditions.
Bob K5CRX: DStar for Tech Net in January about what it is and how it works. 5 Minutes during each net.
"Back to Basics" series. "Bits, Parts, and Pieces".
What are active components and what are passive components.
What is a resistor? Wire wound and carbon! What's the difference and why it is important.
Passive components:
What is a capacitor? Used for filters. Passes AC.
What is an inductor? Winding of wire/coil - air/iron - would pass DC.
Capacitor/inductor - band pass circuit. Or filter out a frequency.
What is a diode? Allows current in one direction. A rectifier.
Active Components:
What is a transistor? Semi-conductor material. NPN/NPN types. Controlled by the Base of the transistor. How to check a transistor if it is good (or not).
What is an SCR? Once turned on it cannot be turned off. Good for controlling large amounts of power. Acts as a switch. Like a mechanical relay.
Electromechanical Relay: Electromagnet that pulls a switch open or closed. Also used in antenna relays. Latching relays, to switch components in and out.
Integrated Circuit: Circuits miniature
Op-Amps: A popular IC used to amplify signals and used in our radios.
Tips: Bad microphone connectors/cables.
What is Asterisk and Allstarlink.org
SwapShop: A spectrum analyzer (broken). HP8195 and a spare for parts. Contact W9VE.
Wanting to buy NC50-with 8pin connector. Contact KF5STR@yahoo.com.
73 Round: W9VE had the following comments: Crowbar circuits use a SCR to prevent the power supply from shorting out using a "crowbar circuit". Relays - were people who would pass a message from person to person. It was used in the first telegraphs. After 100 to 200 miles the signal would be too weak. The would use an electromagnet to operate a switch, to strengthen the signal and restart a clean signal.
Bob KF5HGU - Low Power CW operation and how it sounds. CW net TONIGHT on ARRL Straight Key Night! www.arrl.org
There were 28 Checkins tonight.
Duration: 1 Hour 32 Minutes
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